collins



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Oct. 23, 1928.

c. B. oLLlNs AsPRNG MOTOR Original Filed Feb. 24. 1920 2 Sheets sheet 1oct. 23, 192s.Y

C. B. COLLINS SPRING MOTOR original Filed Feb. 24- 1920 2 sheets-sheet2- ATTORNEY Reissued Oct. 23, 1928.

i UNITED STATES i GAP B. COLLINS, OF NEW YORK, N. Y.

SPRING MOTOR.

Original No. 1,480,668, dated January 15, 1924, Serial No. 360,887,

filed January 15, 1926. Serial No. 81,568.

18, 1923. Application for reissue My invention concerns novel andadvantageous improvements in spring motors and concerns particularly7but not restrictedly, motors of this typewhose speed is maintainedsubstantially uniform or constant by a suitable governor or controller,such, for example, as one of the centrifugal type. Such motors areadapted for convenient andsatisfactory employment in many relations, forinstance in the handles of power-driven razors, telephone time-limitmeters, and similar appliances. When used for actuating rot-ary razors,for example, the motor is lhoused in and operatively connected to adivided or sectional shell or casing and is wound up by turning one ofsuch elements relatively to the other. n

Various features of advantage also accrue from the particular manner ormounting and `co-relating the various elements of the mechanism all ofwhich will be readily understood from a study of the features ofconstruction and operation of a preferred embodiment of the inventionwhich has been fully illustrated in the accompanying drawings form-vinga part of this specification and throughout the views of which likereference characters refer to the same parts,

In this drawing:

Figure 1 is a fragmentary, central, vertical section through the motorand its casing or housing on line 1-1 of Figure 2;

Figure 2 is ayhorizontal'section taken on line 2-2 of Figure 1, themanually-operablel stop or brake being omitted.

.Figure 3 a horizontal section illustrating the retaining device inplan;

Figure 4 is a plan view, of the centrifugal governor and l Figure 5 is aplan of the top frame member.

Referring to the drawings, it will be observed that the applianceincludes a Supportplate 1() of irregular shape connected at one or moreof its Vthree outstanding ears, as shown in Figure 2, to the inside ofthe one or upper element 11 of an enclosing casing or housing. Mountedon such plate by a screw 14 is a sleeve 12 provided with a circularflange 13 .lying on the top of plate 10 and into a threaded aperture ofwhich the retaining screw 14 fits. Inside' of sleeve 12 l provide acentral, stationary post 15, the two parts 12 and 15 being fixedlysecured together in any approvedv manner as by a transverse tapered pin16.

flange 29revoluble on the sleeve led February 24, 1920. Renewed JuneRevoluble on the stationarypost 15 below the sleeve 12 I use a sleeve 17whichis held in position lengthwise on the post by the enlarged head ofascrew 18 taking into a threaded hole 19 in the end of the post. Suchsleeve 17 is turned to wind up the springmotor as hereinafter indicatedby means of an internally-threaded collar 20 screwed on a reduced,threaded, end portion 21 of the sleeve, the circular or outstandingflange of such collar being secured as by soldering or otherwise to theinner face of the other or companion registered shell or casing member22, the opposed housing elements 11 and 22 having a circular overlappingjoint 23 at their edges. A nut 24 is screwed on to the part 21 of thesleeve 17 between a shoulder of the latter and the threaded collar 20,such nut holding in position a spring drum'or barrel 25 having at oneend a part 26 bearing on the nut 24 and revoluble on the cylindricalportion of the sleeve. As is clearly illustrated in Figure 1 the barrel25 has an internal circular shoulder 27 supporting a top disc 28provided centrally with a round or annular 17 and bearing at Aits endagainst the side or under face I of a ratchet-wheel 30 integral with theupper portion of such sleeve. `from an understanding ofthis'construction It will be appreciated that the nut 24 holds ormaintains the elements 25 and 28 in proper assembled relation betweenitself and the enlargement 3() of the sleeve on which such drum isrevoluble.

This barrel or casing 25, 28' accommodates a flat coil-spring 31 withinit, the inner portion of such spring being secured to the sleeve 17 atthe points 32, 32, the outer end of the spring being fastened to theelement 25 in any approved manner, not shown.

Cooperating with the teeth of the ratchetwheel 3() I employ asuitably-shaped doubletooth pawl 33 pivoted at 34 on the under side ofthe main supporting-plate 10.`

The inner face of the cylindrical portion of Amember 25 extended beyondthe member 28 is provided with an internal-gear 35 the teeth of whichare in mesh with those of a small gear 36 on a shaft 37 revoluble in asuitable bearing in the plate 1-0a'nd an aligned bearing 38 in an uppersupporting-plate 39 carried on a plurality of posts 40, 41 rising Yfromthe underlying plate 10. Shaft 37 is equipped with mesh with the arelatively-large gear 42' in teeth of a gear 43, the teeth of p smallergear 48 on a ous shafts and a duplex sleeve composed of two interfittedparts 80 and 8,1 Secured together and accommodated between .a portion ofthe post 15 and a hollow cylindrical part 82 of the fixed sleeve 12, apart of such element 82 being cut away at one side at 44 whereby thegear 42 may extend through such opening and be in cooperative relationwith the teeth of the small gear 43. The portion 82 of the compoundsleeve driven by the springmotor by means of the mechanism designatedmay be employed to rotate any mechanism desired, such, for instance, asthe rotary-blade of a razor, but, of course, the particular meansoperated by such gear is of little importance sov far as this inventionis concerned.

To render the speed of rotation of the gears 42 and 43 uniform andsubstantially-unvarying, it is necessary to provide the mechanism with asuitable governor orcontroller and this comprises the followingcooperating instrumentalities. 'Gear 42 is in mesh and drives a smallergear 45 on a shaft 46 revoluble in bearings in the spaced supportingplates 10 and 39, and a gear 47 on such shaft revolves a shaft 49 insimilar manner revoluble 1n bearings of the same two plates, such shaftbeing equipped with a gear 50 the teeth of Which cooperate with those ofa smaller gear 51.011 a shaft 52 rotatable in bearings of the twoplates, this shaft havingr thereon a spiral gear 53, the teeth of whichare in coactive relation with an elongated spiral-gear 54 on a shaft 55rotatablein bearings in ears or lugs 56 and 57 bent up from the plate10, an end-thrust bearing 58 being provided adjacent to the ear 57against which the end of shaft 55 bears.

The speed of rotation of the gearing and consequently the control of theunwincling of the motor-spring 31 is effected by-means of a brake-mechanism which applies a restraining-\ influence when the speed becomes toohigh and removes or decreases it when the speed is too low, thusrendering the rotation of the v arigears substantially uniform. To thisend a relatively stationary arm 59 is adjustable around its fulcrum orpivot pin 60 screwed into a threaded hole of the upper plate 39, suchlever 59 being secured in adjusted position by means of a screw 61taking into a threaded hole of the plate 39 and extended through a slot62 of the arm 59. At the free end of the latter above the shaft 55 it isequipped with a fiber or other friction block 63 adapted to bear againstthe side face of a friction brake disc 64 forming a part of a sleeve 65slidably mounted on the shaft 55 and having a'cavity- 67 in an. enlargedportion 66 accommodating a coil expansion-spring 68 bearing at one endagainst a collar 69 fixed to the shaft 5 5 in anyapproved manner, as byThe enlarged portion` 66 of the proarms pinning.

slidable sleeve has two sets of spaced j ections or lugs 70 betweenwhich Weight .of the centri fugally-operated 72, 72 are fulcrumed orpivoted at 71, 7 leach of suc-h arms having a tail portion 73 adjacentto a circular flange 74 on the sleeve 69.

In order that the motor may be readily started and stopped, the housingor casing element 11 is slotted at 90 for the accommodation of a slidingfinger-piece 91 roughened externally and frictionally held in positionby means of a stud 92 secured theretoand extending inwardly through theopening 90, the threaded .portion of the stem being equipped with a pairofnuts 94 between which and the inner face of the shell or`casingelement is a washer of leather 95 or other suitable compressiblematerial and a flat leaf-spring member 96 apertured' for theaccommodation of the stud and bent to provide an shifted into and out ofengagement with the periphery of the friction or brake disk 64.

The operation of the appliance will be readily understood from thedetailedv description of the construction and its various parts but maybe summarized as follows:

To wind up the motor, the operator holds the casing element 11 in onehand and turns` the other 22 relatively thereto, the rotation of thelatter effecting the turning of the sleeve 17 and the winding of thespring by reason of the connections between them at 32, iin-- winding ofthe spring 31 being prevented b v reason of the co-action of the pawl 33with the ratchet-wheel 301carried As Soon as the brake spring 97 isshifted away from the friction-disc 64 by sliding the fingerpiece 91 inthe proper direction in the slot 90 of the casing or housing element l1,the spring 3l will begin to unwind from its outer end, its inner endbeing held against rot-ation, and will revolve the barrel 25, 28 and itsinternalgear 35, the rotation of which is transmitted through gear 36,tothe hollow shaft or sleeve element 80, 81, from which the power may betaken off to drive any mechanism desired.

The speed of rotation of these parts is, of course, controlled andregulated by the action weight-arms 72, 72 which will be thrown outpending upon the speed of rotation of shaft 55. If the speed becomesexcessive, the feet 7 3 will engage the fixed flange 74 by reason of theoutward movement of the arms 72 and pull the 'sleeve 65 to the left, asthe parts are viewed-in Figure 2, thus increasing the braking-pressureofthe friction-disc 64 on the fiber or Aotherl element 63. decreasesbelow normal this pressure also. diminishes'because of the slightmovement' of the sleeve to the right, as is permitted through themovements of t-heportions 73 of the arms 72 gears which drives the shaft55 from the gear 42 constitutes merely a speed increasing mechanism ofthe usual type so as to make avail- As soon as the speed relative to theflange 74. The train of 93, 93 bearing on a washer Y extension 97adapted to be Y shaft 37, and gears 42, 43

'llul more or less d-etion set forth in detail able a rate of rotationsuitable and proper for the operation of a centrifugal-governor.

The upper section 11 may be considered as the main section of the casingsince it forms the base or support for the motor mechanism and the lowersection 22 may be considered as an end cap forming a continuation of themain section and a closure for the open end of the same. The nut 20which engages the lower threaded end of the tubular slee-ve or windingstem 17 is affixed centrally to the end wall of the lower cover sectionso that this section rotates concentrically and this form of connectionenables quick detachment of the end casing section if that be necessaryor desirable. The removal .of the end cover section exposes a large partof the spring motor, projecting as it does from the open end o thel maincasing section and the sleeve or hol-v low winding stem 1K7 projectsfrom the motor suiiiciently -to enable the cap section being readilyengaged therewith. The governor and the brake both operate on the sameshaft so that all control is exercised at one part as this is a highspeed of the mechanism and shaft this control is of a smooth character,without strain on any of the gearing or connections. The plate 28closing the upper end of the spring barrel and the ring gear 35overstan'ding the saine are seated in the end of the barrel in definitelocation by means of the internal shoulder 27 in the barrel.

The invention is not limited orrestricted to the precise and exactJfeatures of construeA above and illustrated fully in thedrawings,`because these may be modified within comparatively wide limitswithout departure from the heart and essence of the invention andwithout the sacrifice ofany of its substantial benefits and advantages.

What is claimed is;

l. In an appliance of the character de-v scribed, the combination of aeasing composed of registering sections formed to overlap one another attheir meeting edges and capable of rotation relatively to one another, aspringmotor carried by one of said sections, a shat't rotated by theunwinding of the spring ot said relative rotation of said tially asdescribed.

motor, governing meansto render the speed of rotation of said shaftsubstantially constant, and means to eli'ect winding of the motor uponsections, substan 2. In an appliance of the character described, thecombination of a post, a sleeve revoluble on said post, a coil-springhaving its inner end connected to vsaid sleeve, means to turn saidsleeve on the post to wind up the spring, means to prevent backwardrotation of the sleeve on the post, a spring-barrel conf nected totheouter end of the spring and revoluble on said sleeve and rotated by theunwinding of the spring, a second sleeve on said post, and lgearingconnectingsaid barrel and second sleeve whereby the former rotates theouter end of the spring and rot-ated by the unwinding ot' the spring, agovernor controlling the unwinding of the spring, and a second sleeve onsaid post revolved by said gearing, substantially as described.

4. In an appliance oi' the character described, the combination ot acasing composed o-:t registering sections capable oi rotation relativelyto one another, a post carried by one ot' said sections, a sleeverevoluble on said post and connected to the other casing section, acoil-spring having its inner end connected to said sleeve, aratchet-wheel rotated by said sleeve, a pawl cooperating with saidratchet-wheel to prevent backward rotation otl the sleeve on the post, aspring-barrel connected to the outer end ot' the spring and revoluble onsaid sleeve, a second post, and gearing connecting` said springbarreland second sleeve whereby the motor sleeve on said revolves the latter,the spring being wound up by the turning of one oi' said casingsecdescribed..

5. In an appliance of the character described, the combination of arelatively-hired post, an apertured sleeve fixed to and surrounding saidpost, a second revoluble driven sleeve between said post and sleevehaving gear-teeth thereon, a third sleeve revoluble on said post, acoil-spring having its inner end connected to said third sleeve, meansto rotate said third sleeve to wind up the spring, gearing connected tothe outer end ot said spring and projecting through the aperture of saidtirst sleeve and in mesh with the gear ot said second sleeve, and agovernor cont-rolling the speed of rotation of said driven sleeve,substantially as described.

6. In an appliance' of the character described, the combination of acasing composed of registering sections capable or' rotation relativelyvto one another, a post mounted on one of said sections, an apertnredsleeve fixed to and surrounding said post, a second revoluble drivensleeve bet-Ween said post and sleeve having gear teeth thereon, a thirdsleeve revoluble on said post and operatively connected to the othercasing section, a coil-spring having its inner end connected to saidthird sleeve, gearing connected to the outer end of said spring andprojecting through theaperture of said iirst sleeve and in mesh with thegear of said second driven sleeve, and a. governor controlling the speedof rotation of said driven sleeve, substantially as described.

7. In apparatus of the character described, a casing composed ofcooperating` relatively rotatable sections, a spring motor carried byone of said sections and provided with a winding member 'exposed to theother relatively rotatable section, a shaft rotated by the unwiuding ofthe spring of said motor, governing means to render the speed ofrotation of said shaft substantially constant and a screw connectionbetween the second casing section and the exposed winding member of thespring motor, whereby'said second section may be readily mounted andunmounted with respect to the first section, the spring of the motorbeing wound in the direction of the tightening of said screw connectionso that a continuation of the screwing on movement of said section willeffect the winding of the motor.

8. In apparatus of the character described, a casing composed ofcooperating relatively rotatable sections, one forming an extension ofand an end closure for the other, a screw member inside the end wall ofsaid end closure section and carried thereby, a spring motor mounted inthe other casing section and having a screw member at the end of saidcasing section and detachably engageable by the screw member-sof the endcasing sections.

the spring motor.

and a shaft journaled in section of the casing and operated bytheunwinding of the spring of said motor.

9. In apparatus of the character'disclosed, a casing composed ofcooperating relatively rotatable sections, one forming an end closureforthe other, the end closure section having a screw socket inside thesame at the .center thereof, a spring motor mounted n the other sec-tionhaving a screwthreaded winding stem engaged in the screw socket of theend section so that upon relative rotation of the two casing sections,the spring of the `motor will be wound and a shaft in the spring motorsection operated by the unwinding of l the spring.

10. In apparatus of the character disclosed, a casing composed ofcooperating relatively rotatable sec-tions, one forming an end closureto the other, a centrally arranged screw member carried by said endsection, a spring motor mounted inthe other section and having a windingmember provided with a screw element engaged by the screw member of theend section, a shaft operated by the unwinding of the spring of themotor and a governor for maintaining the speed of said shaftsubstantially constant.

- 11. In apparatus of the character described` a casing` composedofcooperating relatively rotatable' sections, a spring motor mounted inone section and including al projecting centrally arranged winding stem,the cooperating casing section enclosing the projecting barrel of thespring motor and` provided with a centrally disposed screw socketdetachably engaging the screwthreaded winding stem of the motor, a shaftin the first section operated by the unwinding of the motor and means inthe first section regulating the speed of said shaft.

12. In apparatus of the character described, a casing composed ofcooperating relatively rotatable sec-tions, a post carried by onesection and projecting into the other relatively rotatable section, aspring barrel rotatably mounted on said post and carrying a powerspring, a shaft operated by the unwinding movement o-f the spring barrelon the post and means for effectingthe winding of the spring by relativerotary movement of the casing sections. A v y 1.3. In apparatus of thecharacter described, a casing composed of cooperating relativelyrotatable sections arranged in overlapping relation and one forming anextension of an end closure for the other, a centrally arranged screwmember carried by said end closure section, a spring motor carried bythe other section having a projecting winding member provided withascrew'element engagcable with the screw memberl of the end section and ashaft in the ,spring motor section operated by the unwinding of thespring. V

14. In apparatus of the character disclosed, al casing composed ofcooperating relatively rotatable sections, a post carried by onesection, a sleeve on said post, means for securing said sleeve inposition on the post, a spring barrel journa-led on the sleeve, a powerspring in said barrel secured at its inner end to the sleeve, a shaftdriven from the spring barrel and means spring winding movement ofrelative rotation of the casing 15. In apparatus of the character` de-Vscribed, a casing composed of relatively 1'0- tatable cooperatingsections, one forming an end closure. to the other, a screw sockethaving a wide flange by which the same is secured inside the end wall ofthe end section, a'spring motor mounted in the other casing section,having a sc-rewthreaded winding stem engaged in the screw socket andwhereby the two sections are rotatably coupled and a. shaft in thespring motor section operated by the unwindingof the spring of themotor. 16. In apparatus of the character described,

and having a the sleeve' by sections.

` a frame, xa rotatable support mounted on said i chored at its innerend to the-rotatable support, aI shaft operated by the unwindingmovement of the spring barrel and a windfor leffecting a end, a springbarrel journaled von l the open end of said rst section, a postA sup`orted in said first section and promoting lnto the cap section, a springbarre mounted on the projecting portion of said post, a sleeve mountedon the post, a spring in the barrel anchored at its inner endto saidsleeve, driving means carried by the cap section for winding the springupon relative rotation of the two casing sections, pawl and ratchet-mechanism for holding the inner end of the spring against unwindinmovement, earingv driven from the spring arrel, a sha jourlnaled in thefirst section and operated by said dinally extending supporting post inthe` main section, a spring motor mounted on said post, means forwinding said spring motor by rotation of the cap section with respect tothe main casing section, a' shaft mounted in\the main section inconcentric relation to said post and operated by the unwinding of thespring of the motor and means for governing the operation of said shaft.

29. In apparatus of the character disclosed, a spring-motor andmechanism operated thereby, a housing for said spring-motor, includingcoextensive, substantially equal diametery relatively rotatableoverlapping casing sections, said motor being supported in one of saidcasing sections and having a winding connection with the other casingsection whereby upon relative rotative movement of the casing sectionssaid spring-motor will be wound to drive the mechanism aforesaid.

30. In apparatus of the character disclosed, a spring-motor including apower spring and a centrally arranged supporting shaft for winding thesame, said spring supporting and winding shaft having a screw threadedouter end portion exposed at the endof the motor, pawl and ratchetmechanismfor ho1ding the inner end of said winding shaft, a casingenclosing the spring-motor and a relatively rotatable hand gripsubstantially coextensive with the casing and having a screw connectionwith and mounting on said outer end of the winding shaft.

In testimony whereof, I affix my signature.

f CAP B. COLLINS.

ing casing member enclosing the spring barrel and having a screwconnection with the screwthreaded stein of the rotatable support.

17. In apparatus of the character described, a frame, a rotatablesupport mounted on said fra-me, said support carrying a ratchet at oneend and having a screwthreaded stem at the opposite end, a spring barreljournaled on said support, a spring in said barrel anchored at its innerend to the rotatable support, a shaft operated by the unwinding movementof the spring barrel and a Winding member having a screw connection withthe screwthreaded stem of the rotatable su 'port and including a hollowhandle forming a readily detachable end cover over the spring barrel.

18. In apparatus of the character disclosed, a spring barrel having anopen end and provided with an internal shoulder in such open end,avsprin seated in said barrel, a closure plate seated 1n the open end ofthe barrel in engagement with said shoulder and a ring gear seated inthe open end of the barrel over said closure plate.

19. In apparatus of the character disclosed, a spring barrel having anopen end and provided with an internal shoulder in said open end, aspring within the barrel and a ring gear and a closure plate seated inthe open end of the barrel over the internal shoulder therein.

20. In apparatus of the character disclosed, a supporting sleeve, aspring barrelI having one end journaled on said sleeve and open at itsopposite end, said open end of the barrel having an internal shoulder, aspring within the barrel anchored vat its inner end to the sleeve, aring gear and a closure plate engaged in the open end of the barrel overthe internal shoulder, said closure plate having a rotatable bearing onthe sleeve, means for rotating the sleeve to wind the spring and apinion engaged with the ring gear for taking off the power of theunwinding movement of the spring. K

.21. In an appliance of the character described, the combination of apost, a sleeve on said post, a coil spring having its inner endconnectedv to said sleeve, means to turn said sleeve to wind up thespring, means to prevent backward rotation of the sleeve, ay

spring barrel connected to the outer end of the spring and revolble onsaid sleeve and rotated by the unwinding of the spring, a rotatableshaft and gearing connecting'said barrel and.' shaft, whereby the formerrotates the latter including an internal gear mounted on said springbarrel. Y

22. In apparatus of the character described, a sectional casing, astationary post supported in one section ofthe casing, a spring motorhaving a spring barrel rotatably supported on said post, a. power springin said barrel and win ding means for said spring connected with theother section of the casing and providing a rotatable ,support for saidother casing section.

23. In apparatus of the character described, a casing composed ofrelatively rotatable sections, one forming an end closure for the other,a sleeve connected with the end closure section, a post carried by theother section and onwhich said sleeve is rotatably engaged, a springbarrel rotatable about said sleeve, a spring in said barrel connected atits inner end with the sleeve, a shaft journaled in concentric relationto the post and gearing for operating said shaft from the spring barrel.

24. In apparatus of the character described, a casing composed ofrelatively rotatable sections, one forming an end .closure for theother, a sleeve connected with the end closure section, a post carriedby the other section and on which said sleeve is rotatably engaged, aspring barrel rotatable about said sleeve, a spring in said barrelconnected at its inner end with the sleeve, a shaft journaled inconcentric relation to the post, gearing for operating said shaft fromthe spring barrel and a governor within the casing section whichsupports the post for maintaining the speed of rotation of the shaftsubstantially constant.

25. In apparatus of the character disclosed, a sectional casing composedof a main open ended section and a relatively rotatable end cap closingthe open end of said main section, a supporting post centrally mountedin the main section, a spring motor including a spring barrel mounted onthe post and a spring winding member exposed at the open end of the mainsection, a spring winding connection between said member and the end'cap section of the casing, a shaft ournaled in the main section of thecasing and operated i by said spring motor and means for controlling theoperation of said shaft.

26. I'n apparatus of the character disclosed, a sectional casingcomposed of` a main open ended section and a relatively rotatable endcap closing the open end of said main section, a supporting postcentrally Vmounted in the main section, a spring motor including aspring barrel mounted on the post and a sprin winding member exposed atthe open end o the main section, a spring winding connection betweensaid member and the end cap section of thecasing, a shaft journaled inthe main section of the casing and operated by said spring motor, meansfor controlling the operationl of said shaft and pawl and ratchetholding means for the spring motor located within the main section 'ofthe casing.

27. In apparatus of the character disclosed, a casing composed of anopen ended section and a relatively rotatable cap section closing

